From: <%= data.from.name %> <<%= data.from.address %>>
To: <%= data.to %>
Subject: [<%= data.tag %>] <%= data.site.uri.host %> changed
Content-Type: multipart/alternative; boundary="<%= data.boundary %>"
MIME-Version: 1.0

<% if data.bodies.key?(:plain) %>
--<%= data.boundary %>
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64

<%= Base64.encode64(data.bodies[:plain]) %>
<% end %>
<% if data.bodies.key?(:html) %>
--<%= data.boundary %>
Content-Type: text/html; charset="utf-8"
Content-Transfer-Encoding: base64

<%= Base64.encode64(data.bodies[:html]) %>
<% end %>
--<%= data.boundary %>--
